reiko has been having trouble with her neighbor, a student named kobayashi. he bothers her with annoying behavior and disrespectful comments. when she tries to warn him, he retaliates with sexual harassment. fed up with his arrogant attitude, reiko decides to teach him a lesson in her area of expertise—sex. using her adult skills and allure, she dominates him with her overwhelming sex mount, forcing him to smell her armpit odor. young kobayashi is helpless against reiko's seductive prowess, and he becomes traumatized by her teaching methods.